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Review regressions before expanding the test." ], "measure": "Peak memory, task pass rate, latency, and total serving cost at the same context and load.", "decision": "Keep the change only if it meets your preselected quality and latency limits and improves the metric you care about after setup and operating costs. Otherwise retain the baseline. This is an exploration plan, not a validated recommendation." }, "builder_review": null, "arxiv_id": "2609.24322", "title": "The Undetected Damage of Quantization on Retrieval and How to Fix It", "summary": "The method replaces uniform low-bit quantization of embedding models with a label-free score-gap diagnostic plus selective mixed precision: allocate higher bit-width to the layers whose quantization most shifts the top-1/top-2 score gap, and use the gap at inference to flag unreliable quantized retrievals. 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